Physics, 13.09.2019 20:30 runninglovexoxo
Until a train is a safe distance from the station, it must travel at 5 m/s. once the train is on open track, it can speed
up to 45 ms. if it takes a train 8 seconds to reach 45 m/s, what is the acceleration of the train
Answers: 3
Physics, 22.06.2019 13:00
Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.
Answers: 2
Physics, 22.06.2019 18:00
Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
Answers: 3
Physics, 23.06.2019 07:30
An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. part a how much work is required to bring an additional electron from infinity to the origin? express your answer with the appropriate units. part b if, instead of the second electron coming in from infinity, it is initially at x = + 20.00 m on the axis and is given an initial velocity of 100.0 m/s toward the origin, does it reach the origin? part c how close to the origin does it come?
Answers: 3
Until a train is a safe distance from the station, it must travel at 5 m/s. once the train is on ope...
Mathematics, 14.01.2021 19:20
Physics, 14.01.2021 19:20
Mathematics, 14.01.2021 19:20
Mathematics, 14.01.2021 19:20
Physics, 14.01.2021 19:20
Physics, 14.01.2021 19:20
Computers and Technology, 14.01.2021 19:20
Mathematics, 14.01.2021 19:20
Social Studies, 14.01.2021 19:20